The cast and crew of The Big Bang Theory have taken part in a new flashmob video.

During filming of a recent episode of the CBS sitcom, the studio audience and showrunners Chuck Lorre, Bill Prady and Steve Molaro were surprised with a sudden live dance routine to Carly Rae Jepsen's 'Call Me Maybe'.

In between takes, the main cast members were sitting on the show's famous couch before the summer pop hit began playing in the background.